Source for the Accidental Tech Podcast (ATP) T-Shirt

ATPLogoView.m

// Source for the Accidental Tech Podcast (ATP) T-Shirt:
//  http://www.marco.org/2014/04/29/atp-shirts
//
// By Marco Arment, April 28, 2014. MIT license.

@implementation ATPLogoView

- (void)drawRect:(CGRect)rectIgnored
{
    NSString *fontName = @"MyriadPro-Semibold";
    NSString *title = NSLocalizedString(@"Accidental Tech Podcast", NULL);
    NSString *initials = NSLocalizedString(@"ATP", NULL);
    CGRect rect = { CGPointZero, self.bounds.size };
    CGFloat w = rect.size.width;
    CGFloat offsetY = w * -0.07f;

    CGRect ringRect = CGRectInset(rect, w * 0.08f, w * 0.08f);
    ringRect.origin.y += offsetY;
    UIBezierPath *ring = [UIBezierPath bezierPathWithOvalInRect:ringRect];
    ring.lineWidth = ceilf(w * 0.012f);
    [[UIColor colorWithWhite:0.3f alpha:1.0f] setStroke];
    [ring stroke];

    CGRect innerRingRect = CGRectInset(rect, w * 0.21f, w * 0.21f);
    innerRingRect.origin.y += offsetY;
    UIBezierPath *inner = [UIBezierPath bezierPathWithOvalInRect:innerRingRect];
    inner.lineWidth = ceilf(w * 0.007f);
    [[UIColor colorWithWhite:0.7f alpha:1.0f] setStroke];
    [inner stroke];

    NSMutableParagraphStyle *pStyle = [[NSMutableParagraphStyle alloc] init];
    pStyle.alignment = NSTextAlignmentCenter;
    NSDictionary *titleAttributes = @{
        NSFontAttributeName: [UIFont fontWithName:fontName size:w * 0.068f],
        NSParagraphStyleAttributeName : pStyle,
        NSForegroundColorAttributeName : [UIColor whiteColor],
        NSKernAttributeName : @(w * 0.0037f)
    };
    NSString *t = [title uppercaseString];
    CGRect titleRect = CGRectMake(0, w * 0.91f, w, w * 0.09f);
    NSStringDrawingOptions o = NSStringDrawingUsesLineFragmentOrigin;
    [t drawWithRect:titleRect options:o attributes:titleAttributes context:nil];

    CGSize bs = CGSizeMake(w * 0.44f, w * 0.19f);
    CGPoint bOrigin = CGPointMake((w - bs.width) / 2.0f, (w - bs.height) / 2.0f);
    bOrigin.y += offsetY;
    CGRect b = { bOrigin, bs };

    CGFloat cX = CGRectGetMidX(b), cY = CGRectGetMidY(b);
    CGAffineTransform transform = CGAffineTransformMakeTranslation(cX, cY);
    transform = CGAffineTransformRotate(transform, 0.5236f);
    transform = CGAffineTransformTranslate(transform, -cX, -cY);
    CGContextConcatCTM(UIGraphicsGetCurrentContext(), transform);
    [[UIColor colorWithRed:0.12f green:0.25f blue:0.4f alpha:1.0f] setFill];
    [[UIBezierPath bezierPathWithRoundedRect:b cornerRadius:bs.height * 0.15f] fill];

    NSMutableDictionary *a = [titleAttributes mutableCopy];
    a[NSFontAttributeName] = [UIFont fontWithName:fontName size:bs.height * 0.84f];
    a[NSKernAttributeName] = @(bs.height * 0.04f);
    CGRect r = CGRectInset(b, 0, 0.17f * bs.height);
    [initials drawWithRect:r options:o attributes:a context:nil];
}

@end

Discovering this after typing it up from the image makes me feel like https://www.youtube.com/watch?v=zdA__2tKoIU